I want to delete my ADC from active directory site and services, which is not live. I am getting message " Object ADCSVR contains other objects. Are you sure you want to delete object ADCSVR and all of the objects it contains?

If you cancel the running deletion, the objects deleted thus far will not recovered.

WARNNING: if you select Use Delete Subtree server control check box, all objects within the subtree, including all delete-protected objects, will be deleted, and the deletion cannot be canceled."

Please confirm, it is safe to delete here from AD site ans services also please confirm if i enable the check box "Delete Subtree server control..

Hi

 If this ADC is not live and will not turn on again.You could delete that on AD site and services.it's safe to delete it complete with subtree and also you need to remove subnet about this ADC.

And you will do a metadata cleanup for completly remove this ADC from domain;

Check for metadata cleanup;

https://technet.microsoft.com/en-us/library/cc816907(v=ws.10).aspx

And after that make sure ADUC,DNS,AD site and services,DFS records updated.